Copper strip production procedure
Making components: According to the alloy aspect make-up of different brands, make proportions according to real needs and execute preliminary processing.
Smelting: Melt the ingredients in the melting furnace. At the exact same time, heater evaluation is called for. Normally, chemical evaluation and optical spectrum analysis, and the proportion and feeding are changed in time according to the analysis results.
Ingot spreading: There are upward drawing methods, semi-continuous casting, straight continuous casting, iron mold spreading, etc. Semi-continuous spreading describes the downward circulation of molten water, with the advantage of the best accuracy. The upward illustration technique describes the higher flow of molten water, with the advantage of excellent precision. Straight continuous spreading describes the straight illustration of molten water, cooling down and directly on the rolling mill, and rolling it into coils, with the drawback of inadequate accuracy. Iron mold spreading describes the straight pouring of liquified water right into the iron mold, with the drawback of the worst precision.
(copper strip)
Milling: Surface area handling of ingots.
Hot rolling refers to the rolling of negative ingots after heating but before cooling down, without annealing.
Straightening-milling: the surface of the ingot is harsh, and the interior framework hangs.
Cold rolling refers to the procedure of heating and cooling the billet while annealing and rolling.
Annealing: Bell furnace annealing is typically used for semi-finished products; annealing is consistent but managed by thickness, and hardness is controlled by annealing time.
Pickling: Clean the dirt after annealing, and pickling is typically needed after annealing.
Completing (intermediate) rolling: The surface area is really smooth, and the interior structure is relatively uniform and limited.
Cleansing and leveling: Determine the monotony of home plate surface.
Longitudinal shearing or transverse shearing: The copper strip to be separated into strips is longitudinally sheared and rolled right now, and home plate is transversely sheared at this time.
Examination: Conduct mechanical residential properties and chemical composition examinations
Packaging and warehousing: Evaluate products with qualified high quality, mark and register them for warehousing as required.
Technique for treating staining of copper strip surface area
Control the focus of acid during pickling. When the acid focus is high, the residual acid affixed to the surface area of the copper strip is challenging to clean off and increases the contamination of the cleansing water, which is easy to triggers the residual acid focus in the cleansing water to be too high, making the copper strip after cleaning up more probable to alter shade. When figuring out the focus of the pickling option, try to decrease its focus as high as possible while being able to clean up the oxide layer externally of the copper strip.
Control the conductivity of pure water. Control the conductivity of distilled water that is, regulate the content of unsafe substances such as chloride ions in pure water.
Control the conductivity of warm cleansing water and passivation agent. The boost in the conductivity of warm cleaning water and passivation representative is mainly because of the residual acid brought right into the running copper strip. Under the condition of making certain the high quality of the distilled water made use of for cleansing, controlling the conductivity suggests controlling the amount of recurring acid.
Guarantee that the copper strip is completely dry. Partly shut the electrical outlet of the air pillow furnace coiling, and make use of a dehumidifier and ac unit in the regional closed device to manage the humidity and temperature of the copper strip throughout coiling within a specific variety.
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